1.5% of messages may include 30% of users. Each affected user may have had some messages delivered quickly and others delayed. If 30% of users had 5% of their m

1.5% of messages may include 30% of users. Each affected user may have had some messages delivered quickly and others delayed. If 30% of users had 5% of their messages delayed, then about 1.5% of total messages would be delayed, not considering the difference in volume between users.